Disk Device
The local path of the disk storage area where the data will be stored. Click the (...) button to access to the Browse for Mount Path dialog box that allows you to establish a local path in the MediaAgent computer.

Network Path

Select this option to specify a network path as the target share.

Credential

Displays the list of credentials that are added using the Credential Manager available in the Control Panel. To create a new credential, click the Create New button. For instructions about creating a credential, see Adding a Credential to Credentials Manager.

Folder

The network mount path of the disk storage area in which the data will be stored. Click the (...) button to access to the Browse for Mount Path dialog box that allows you to establish a local path in the MediaAgent computer.

Disk Library Maintenance (General)

Use this dialog box to select the mount paths where you will perform a fragmentation analysis.

Device Name

Name of the device.

Mount Path Name

Indicates the disk mount path name.

Size

Indicates the size of data in the disk mount path.

Date of Last fragmentation Analysis Run

Indicates the date when the last successful fragmentation analysis was performed for this mount path.

Last Analyzed Fragmentation %

Indicates in percent the disk fragmentation reported in the last successful maintenance job.

Analysis

Use this option to select the mount path for fragmentation analysis.

Disk Library Maintenance (Schedule type)

Use this dialog box to run or schedule a disk maintenance job.

Immediate

Select this option to run the job immediately.

Schedule

Select this option to create a schedule for this job. Click Configure to configure the schedule options.

Library Properties (General)

Use this dialog box to view or modify the properties of a disk library.

Library Name

The alias provided by the user for the library. The alias can be changed at any time without affecting the ability to restore data that might have already been backed up using the library.

Associated MediaAgents

The name(s) of the MediaAgent(s) that controls the library.

Number of Mount Paths

The total number of mount paths that are defined for the library.

Status

The status of the library.

Disk Space

The amount of space occupied on the disk. By default, the MediaAgent automatically updates the status of the disk space every 30 minutes. This is done based on the Interval (Minutes) between disk space updates parameter set in the Media Management Configuration dialog box.

Disks that require attention are indicated by a yellow icon. If the amount of space exceeds the maximum limit (that is, 95%), then the Space Status icon is highlighted in red. In this case, you must free up some space or add more space to the volume or modify the mount path.

Enable Library

Select this to bring the library online and make it available for use. Clear this option to take the library offline. When a library is offline, all the mount paths are inaccessible to the MediaAgent.

A library's online/offline status reflects its logical availability to the MediaAgent, not its physical availability. For example, a library can be enabled even if it is physically unavailable because of a hardware failure.

Hide Library

Indicates whether the library should be visible in the CommCell Console. When selected, the library will not be visible when the Show hidden libraries option available in Service Configuration tab of Media Management Configuration dialog box is disabled.

Mark Library Offline for Maintenance

Select this option to make the library unavailable for read/write operations such as backup, restore or auxiliary copy operations. However, the library will be available to perform other administrative tasks.

This option is useful when you wish to perform administrative or maintenance tasks on the library.

Mark Archive files as Read-Only

When this option is selected, the system creates archive files in the disk library with read-only permissions.

When this option is cleared, the system creates archive files in the disk library with all permissions.

Use this option to create read-only archive files on NetApp SnapLock volumes with access time set according to the retention days (backup or archiver retention days, whichever is higher) specified in the storage policy copy.

Timeouts (in Minutes)

The timeout parameter determines how long a job waits for a status response after an operation is requested. If the job does not receive a success or failure status within the timeout period, the job is terminated and a failure message is displayed. You can set the following timeout periods:

Mount
The number of minutes used to mount the library for read/write operations.
Unmount
The number of minutes used to unmount the library after a read/write operation.

Offline Reason

Indicates the offline reason when the Status of the library is displayed as Offline.

Description

Use this field to enter a description about the disk library. This description can include information about the disk library's content, any cautionary notes, and so on.

Library Properties (Mount Paths)

Use this dialog box to view or modify the mount path properties of a disk library.

Attributes

Automatically add data paths for new drivepools configured
When enabled, the system automatically adds the alternate data paths for a shared library.
Disks within this library support Hardware Single Instancing
When this option is selected, the underlying storage is able to do single instancing on files if the same file content is written multiple times. For example, Centera supports hardware based single instancing.

Note: For underlying storage hardware like Data Domain which has parsing logic of Commvault's data format, there is no need to write data in individual small files. The data is written in a container format, where multiple files are combined together into a chunk.

This option is not applicable for Commvault's Deduplication.
Prevent accidental deletion of data from mountpaths
Select this option to prevent contents of mount paths (on Windows platforms) from being accidentally deleted. Mount paths created when this option is enabled are protected from accidental deletion.

Do not enable this option when:
- The mount path(s) in the library are hosted on WORM hardware that has options to control and prevent accidental deletions, such as SmartLock in Isilon, or
- The Mark Archive files as Read-Only option is selected in the General tab of Library Properties dialog box.

Mount Path Usage

The following parameters are applicable when there are several mount paths in the disk library:

Fill and spill mount paths (Use new mount paths only as needed)
Specifies that the system should completely consume (fill) the free space in a mount path before using another mount path.
Spill and fill mount paths (Load balance use of mount paths)
Specifies that the system should round-robin (spill) between the available mount paths for each job.

Prefer mount paths with more free space

Specifies that while using the round-robin method to write the data, the system will use the mount path with the most free space available. The Free space in GB can be defined using the Free space difference in GB to consider preferring mount paths with more free space parameter.
Select mount path for MediaAgent according to the preferred setting
Specifies the mount path that must be picked for write operations. (By default this option is cleared .)

When selected, the mount path set as the 'preferred' mount path for the MediaAgent (selected in the data path), is picked for write operations.

When cleared, the mount path is picked based either on the 'spill and fill' or the 'fill and spill' option set for the library.

Note: Select this option to prevent write operations from occurring over a network.

Mount Path Allocation Policy

Maximum Allowed Writers
When selected, maximum concurrent writers on the disk library will be established.
Allocate number of Writers
By default, maximum concurrent writers are established on the disk library. To limit the number of writers, type the number of writers that you want to allocate.

Library Properties (Associations)

Use this dialog box to identify the storage policies and the storage policy copies accessing the library. The following information is displayed for each storage policy accessing the library:

Storage Policy
The name of the storage policy accessing the library.
Copy Name
The name of the storage policy copy accessing the library.

Library Properties (Security)

See Entity Properties (Security) for more information.

Library Properties (Disk Usage)

Use this dialog box to view the disk usage report.

Disk Space Utilization

Displays the total capacity that is available in the library

Disk Space Savings

Displays the disk space savings when you use deduplication

Average Daily Disk Consumption

Displays the amount of space consumed and freed within the library over a period of time

Library Properties (Space Management)

Use this dialog box to set threshold parameters:

Space Thresholds

Disk free space percentage

Low Watermark (%)
Specifies the minimum amount of free space at which the low watermark warning should be generated. If the amount of free space, for all the combined mount paths, reaches or falls below the low watermark, the system adds an entry in the Event Viewer and sends an Insufficient Storage alert with status Below Low Media Threshold, if configured.
Warning Watermark (%)
Specifies the amount of free space on the disk at which a warning must be generated. If the amount of free space falls below the specified amount, then the system generates an event message and generates Insufficient Storage alert with status Below Warning Threshold, if configured.
Notify when library will run out of space in n days
Specifies the number of days in advance to trigger notification for low disk space in the library. See Modify the Low Watermark for more information.

Thresholds for Managed Disk Space

The following parameters for free disk space is considered for data aging when the Enable Managed Disk Space for disk data option is enabled in the Retention tab of the Copy Properties dialog box.

The following parameters can be established:

Start aging when data occupied on disk is n %
Specifies the disk capacity in percentage that must be reached before data is aged when the Data Aging operation is run. If necessary, use the space to modify the threshold. Note that any predetermined basic or extended retention rules must be met before the data is aged.
Stop aging when data occupied on disk is n %
Specifies the disk capacity in percentage, when reached, data is not aged during a Data Aging operation. If necessary, use the space to modify the threshold.

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